[jira] [Commented] (ISIS-2043) Allow domain events to be specified at @DomainObject, and make mixins aware of this.

["ASF subversion and git services (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ISIS-2043?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16696508#comment-16696508 ] 

ASF subversion and git services commented on ISIS-2043:
-------------------------------------------------------

Commit 901b63e2236bd93ed3af8a4b5e188dddecd27dd5 in isis's branch refs/heads/master from danhaywood
[ https://gitbox.apache.org/repos/asf?p=isis.git;h=901b63e ]

ISIS-2043: updates docs for @DomainObject#xxxDomainEvent


> Allow domain events to be specified at @DomainObject, and make mixins aware of this.
> ------------------------------------------------------------------------------------
>
>                 Key: ISIS-2043
>                 URL: https://issues.apache.org/jira/browse/ISIS-2043
>             Project: Isis
>          Issue Type: New Feature
>    Affects Versions: 1.16.2
>            Reporter: Dan Haywood
>            Assignee: Dan Haywood
>            Priority: Major
>             Fix For: 1.16.3
>
>
> Thus:
> {code:java}
> @DomainObject(
>     ...,
>     actionDomainEvent=IncomingInvoice.ActionDomainEvent.class, 
>     propertyDomainEvent=IncomingInvoice.PropertyDomainEvent.class,
>     collectionDomainEVent=IncomingInvoice.CollectionDomainEvent.class
> )
> public class IncomingInvoice {
>   public static class ActionDomainEvent 
>       extends o.a.i.applib.services.eventbus.ActionDomainEvent {}
>   // etc
> }{code}
> then, for this domain event would be used as the default for any actions etc.
> Two refinements to this:
> a) for mixins, the event type emitted by a mixin action should be that of its mixee if possible.  This does mean that the domain event must use <Object> as its generic type, because the source could either be the regular domain object or a mixin.  This seems reasonable, the subscriber can just call ev.getMixee() to determine the original source.
> b) as a metamodel validation, if there are members that already define their own event types, then these event types should inherit from the types defined in @DomainObject.  However, not sure exactly how well this plays with requirement from (a) that the generic type is <Object>.
>  
>  
>  



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